Serum Antithyroglobulin Antibody Levels Are Associated with Diabetic Retinopathy among Euthyroid Type 2 Diabetes Patients: A Hospital-Based, Retrospective Study

Table 2

Thyroid indicators corresponding to different severities of DR.

	Non-DR	Mild NPDR	Moderate NPDR	Severe NPDR or PDR
Number	719	325	44	57
TSH (mU/L)
FT4 (pmol/L)
FT3 (pmol/L)
pTPOAb (, %)	94 (13.1%)	48 (14.8%)	5 (11.4%)	6 (10.5%)
pTgAb (, %)^b	132 (18.4%)	56 (17.2%)	10 (22.7%)	19 (33.3%)^a

TSH: thyroid-stimulating hormone; FT4: free thyroxine; FT3: free triiodothyronine; pTPOAb: positive thyroid peroxidase antibody; pTgAb: positive thyroglobulin antibody; DR: diabetic retinopathy; NPDR: nonproliferative diabetic retinopathy; PDR: proliferative diabetic retinopathy. Data are expressed as or number and proportion. The superscript a indicates that the value in the corresponding group is significantly higher than the non-DR group (). The superscript b indicates that the variation of the thyroid indicator shows a significantly upward trend.